Graphene network organisation in conductive polymer composites

Y.V. Syurik, M.G. Ghislandi, E. Tkalya, G. Paterson, D. McGrouther, O.A. Ageev, J. Loos

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

A latex technique is used to prepare graphene/polystyrene and graphene/poly(propylene) composites with varying GR loadings. Their electrical properties and the corresponding volume organisation of GR networks are studied. Percolation thresholds for conduction are found to be about 0.9 and 0.4 wt% for GR/PS and GR/PP with maximum obtained conductivities of 12 and 0.4 S m -1 for GR loadings of 2 wt%, respectively. Investigations using SEM and electrical conductivity measurements show that for the preparation conditions used GR forms an isotropic 3D network in the PS matrix, but GR forms a 2D network in the PP matrix. The different GR network organisations are possibly forced by the different melt flow behaviour of the matrix polymers during processing and the subsequent crystallisation of PP.
Original languageEnglish
Pages (from-to)1251-1258
Number of pages8
JournalMacromolecular Chemistry and Physics
Volume213
Issue number12
DOIs
Publication statusPublished - 2012

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